Security key
682143102
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 33,208,453
- Total 13F value
- $570,206,725
- Share change
- -582,662
- Put/Call ratio
- 85%
- SEC-reported price per share
- $17.18
- Number of holders
- 151
- Value change
- +$6,800,930
- Number of buys
- 92
- Number of sells
- 47
- Shares outstanding
- 72,704,780
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
151
Top holders
10
OMER full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
OMEROS CORP SEC filings
OMEROS CORP company facts
Broader feeds
Reporting periods
Holder history for CUSIP 682143102
Recent filing periods:
Ownership snapshot
Top reported holders of OMER - OMEROS CORP - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
INGALLS & SNYDER LLC
Disclosed value leader
INGALLS & SNYDER LLC
Comparable rows
15/15
Latest evidence
31 Dec 2025
13D/G
13F
Lead comparable stake: 4.8%
13D/G row: INGALLS & SNYDER LLC
Showing 1-6 of 15 holder rows.
Quick read
INGALLS & SNYDER LLC leads the comparable SEC ownership view at 4.8%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens INGALLS & SNYDER LLC's linked filing trail.
Comparable ownership
Top 5
INGALLS & SNYDER LLC
4.8%
BlackRock, Inc.
6.1%
VANGUARD GROUP INC
4.6%
MORGAN STANLEY
2.7%
STIFEL FINANCIAL CORP
2.5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| INGALLS & SNYDER LLC |
13D/G
13F
Company
|
4.8%
|
$36,604,830
3,466,268 shares
|
-$7,339,905 | 31 Dec 2025 |
| BlackRock, Inc. |
13F
Company
|
6.1%
|
$18,253,840
4,452,156 shares
|
— | 30 Sep 2025 |
| VANGUARD GROUP INC |
13F
Company
|
4.6%
|
$13,722,527
3,346,958 shares
|
— | 30 Sep 2025 |
| MORGAN STANLEY |
13F
Company
|
2.7%
|
$8,157,909
1,989,734 shares
|
— | 30 Sep 2025 |
| STIFEL FINANCIAL CORP |
13F
Company
|
2.5%
|
$7,430,334
1,812,275 shares
|
— | 30 Sep 2025 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
2.1%
|
$6,296,303
1,535,371 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
151
Shares
33,208,453
Rows available
151
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
131
Q4 2025 holders
151
Holder diff
20
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend